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Effect of transport coefficients on the timedependence of density matrix
Effect of transport coefficients on the time-dependence
of density matrix
1 1,2 1,2 2
Yu.V.Palchikov , G.G.Adamian , N.V.Antonenko and W.Scheid
1 Joint Institute for Nuclear Research, 141980 Dubna, Russia
2Institut f¨ur Theoretische Physik der Justus–Liebig–Universit¨at, D–35392 Giessen, Germany
(February 1, 2008)
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1 Abstract
v
o
N For Lindblad’s master equation of open quantum systems with a general
2 quadratic form of the Hamiltonian, the propagator of the density matrix is
analytically calculated by using path integral techniques. The time-dependent
1
v density matrix is applied to nuclear barrier penetration in heavy ion collisions
5 with inverted oscillator and double-well potentials. The quantum mechanical
1
0 decoherence of pairs of phase space histories in the propagator is studied and
1 shown that the decoherence depends crucially on the transport coefficients.
1
9 PACS: 03.65.-w, 05.30.-d, 24.60.-k
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:
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a
Typeset using REVT X
E
1
I. INTRODUCTION
In many problems of nuclear physics and quantum optics, where one deals with open
quantum systems, the memory time of the environment is very short and a Markovian
approximation is suitable. Disr
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